v2pro / plz.codegen

development tools

wombat

binding & validation & functional goodies.

implements api defined in v2pro/plz/util package

Example

//go:generate go install github.com/v2pro/wombat/cmd/wombat-codegen
//go:generate $GOPATH/bin/wombat-codegen -pkg github.com/v2pro/wombat/example
func init() {
	generic.Declare(func() {
		plz.Max(int(0))
		plz.Max(float64(0))
		plz.Max(model.User{}, "Score")
	})
}

func Demo_max_min(t *testing.T) {
	should := require.New(t)
	should.Equal(3, plz.Max(1, 3, 2))
	should.Equal(float64(3), plz.Max(1.0, 3.0, 2.0))
	should.Equal(model.User{3}, plz.Max(
		model.User{1}, model.User{3}, model.User{2},
		"Score"))
}

replace github.com/v2pro/wombat/example with your package name.

you need call go generate before compile

plz.codegen's Issues

copy json

simple value

• int
• int8
• int16
• int32
• int64
• uint
• uint8
• uint16
• uint32
• uint64
• float32
• float64
• string
• bool

one level

• slice + int
• array + int
• map + (string, int)
• struct + *

two levels

• slice + array
• slice + map
• slice + slice
• slice + struct
• array + array
• array + map
• array + slice
• array + struct
• map + array
• map + map
• map + slice
• map + struct
• struct + (array, map, slice, struct)

existing value

• slice + int
• array + int
• map + (string, int)
• struct

new value

nil

• ptr int
• ptr ptr int
• slice int
• slice ptr int
• array
• map
• struct

empty interface

field tag

• rename

extra

• struct
• [2]int

invalid

• int
• int via interface{}

min/max

	int	int8	float64
max	Y		Y
min

support virtual field

add new field to struct without copying

copy native objects

simple value

• int
• int8
• int16
• int32
• int64
• uint
• uint8
• uint16
• uint32
• uint64
• float32
• float64
• string
• bool

one level

• int => *int
• *int => int
• [3]int => [3]int
• [3]int => []int
• map[string]int => map[string]int
• map[string]int => struct
• []int => [3]int
• []int => []int
• strut => map[string]int
• struct => struct

two levels

• slice + array
• slice + map
• [][]int => [][]int
• slice + struct
• array + array
• array + map
• array + slice
• array + struct
• map + array
• map + map
• map + slice
• map + struct
• struct + (array, map, slice, struct)

existing value

• int => *int
• []int => []*int
• [3]int => [3]*int
• struct (int) => struct (*int)
• map[string]int => map[string]*int
• int => *interface{} (*int)
• []int => *interface{} ([]*int)

new value

• int => *int
• [3]int => *[3]int
• struct => *struct
• []int => []int
• map[string]int => map[string]int

nil

• int => (*int)(nil)
• (*int)(nil) => int
• (**int)(nil) => int
• &(*int)(nil) => int
• (*int)(nil) => *int
• (**int)(nil) => *int
• &(*int)(nil) => *int
• []int => []int
• map[string]int => map[string]int

empty interface

• *interface{} => int
• *interface{} => []int
• int => *interface{}
• []int => *interface{}
• []interface{} => []int
• []int => []interface{}
• []interface{} => []interface{}
• map[string]interface{} => map[string]int
• map[string]int => map[string]interface{}
• map[string]interface{} => map[string]interface{}

Benchmark Max of int performance

[]int 10000000 135 ns/op 0 B/op 0 allocs/op
[]interface{} manulally 10000000 221 ns/op 8 B/op 1 allocs/op
[]interface{} reflect.Value 2000000 875 ns/op 8 B/op 1 allocs/op
[]interface{} accessor 5000000 256 ns/op 8 B/op 1 allocs/op